Interface AxisDataLocator

AxisDataLocator interface defines getData API for retrieving data particularly
metadata like WSDL, Policy, Schema. Web Service engines that have different methods in
storing metadata or different types of data to retrieve may code their version of
Data Locator(s)by implementing the AxisDataLocator interface. Axis 2 support
Data Locator plugin by configuring in Axis2.xml or services.xml.